The contraceptive problem.
D000328:Adult; D003267:Contraception / Q000266:history; D003270:Contraceptive Agents; D003276:Contraceptives, Oral; D005260:Female; D049690:History, Ancient; D006801:Humans; D011247:Pregnancy
D003270:Contraceptive Agents; D003276:Contraceptives, Oral